stewart



W. H. STEWART. Calendar-Clock.

No. 225,888. Patented Mar. 23, I880.

mm nmmanomwun. msnmm'om n c 2 Sheets-Sheet 1.

W. H. STEWART. Calendar-Clock.

No. 225,888. Patented Mar. 23,1880.

2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

IVILLIAM H. STEWART, OF BOONVILLE, MISSOURI, ASSIGNOR OF ONE-HALF OF HISRIGHT TO J. B. PRICE.

CALENDAR-CLOCK.

SPECIFICATION forming part of Letters Patent No. 225,888, dated March23, 1880.

Application filed January 3, 1880.

To all whom it may concern Beit known that I, VVILLIAM H. STEWART, fBoonvillc, in the county of Cooper and State of Missouri, have inventeda new and Improved ()loclcUalendar; and I hereby de clare the followingto be a full, clear, and exact description thereof, reference being hadto the accompanying drawings, making part of this specification, inwhich Figure 1 is a front elemtion, showing the manner in which mycalendar is attached to any ordinary clock. Fig. 2 is a verticalsectional view on the line a; a: of Fig. 1. Fig. 3 is a detailperspective of part of the ratchetwheel and pawls.

The object of my invention is to provide a calendar attachment adaptedto be applied to any clock; and my invention consists in acasing made asa bracket or shelf to support a clock, said casing containing a toothedWheel operated by a spring-pawl attached to a wire which passes throughthe shelf up into the clock-casing, and has its end fastened to theloose end of a lever pivoted to the clock-cas- 2 5 ing and provided onits loose end with a shoulder which rests on a cam placed upon thespindle of the hour-hand. From the toothed. wheel beneath the shelfprojects a shaft hearing a pointer, to indicate on the face of the pbracket, by properly disposed figures and signs, the day of the month,the phases of the moon, &c.

In order that those skilled in the art may make and use my invention, Iwill proceed to 3 5 describe the manner in which I have carried it out.

In the said drawings, A represents a shelf provided with the sidesupports, B B, and an indicating-face, (J, on which are characters in- 0dieating the day of the month, phases of the moon, &c. Resting on shelfA is the representation of or a dummy clock-work frame, D, from whichprojects the hour-hand spindle a. On this spindle, next to the frame D,is a cam,

E, which can be made with a sleeve to be easily applied to the spindleof any clock in a very few minutes. Against the frame-work I pivot at ba lever, F, which is provided with a shoulder, d, which bears againstthe cam E, and at each revolution of the spindle of the hour-hand thecam raises the loose end of lever F, and after it passes the highestpoint of the cam the lever suddenly drops. A wire, G, passes from theloose end of the lever through shelf A and has its end attached to aspring- 5 5 pawl, H, which is raised by the lever until it passes thehighest point of the cam and then is thrown forward or downward by acoiled spring, I, its end striking a tooth in a toothed wheel, K, whichrevolves on a spindle, c, said spindle projecting through theindicating-face and bearin g a pointer or hand, which changes positionevery time the wheel K is fed forward one tooth. A detent, L, bearsagainst the wheel K, so as to prevent the wheel from reversing itsmotion when lever F is rising.

The indicating-face I make in removable sheets, each sheet representinga separate month, and at the end of such month to be removed, and at theend of each year a new block or set of twelve months properly marked isplaced around spindle e.

It is evident my invention can be easily and economically attached toany clock already made and a practical calendar-clock thereby 7 made.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A clock-supporting shelf provided with a casing to contain anindicating-wheel, in combination with a clock, D, a removable andchangeable indicating-face, and mechanism to operate an indicating-handfrom the clock, substantially as set forth.

WILLIAM H. STEWART.

Witnesses:

.WM. S. MYERS,

W. SPEED STEPHENs.

